Cheap Solar Cell Panel Small Solar Panel

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China main port
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TT or LC
Min Order Qty:
50000 pc
Supply Capability:
15000 pc/month

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Product Description:

 

 

Specifications

1. monocrystalline silicon solar panel

2. high efficiency

3. 25 year module output warranty

Warranty:

1) 5 years for material & workmanship;

2) 12 years for 90% power output;

3) 25 years for 80% power output.

 

Packaging & Delivery

MOQ: 50pcs

Delivery Time: 10-20 days after order confirmation

Package: Wooden carton or pallet packing

ModelNBJ-025M
Max Power (W)25w
Optimum Power Voltage18.40V
Optimum Operating Current1.36A
Open Circuit Voltage22.53V
Short Circuit Current1.45A
Size645*290*25mm
Weight3.0KG
Cell quantity36 pcs

 

 

Solar cells and their teachnoleadges

The history of solar cell development is briefly outlined, and the properties of the sun and solar radiation are reviewed. Properties of semiconductor materials that are important in the design and operation of solar cells are reviewed. The physical mechanisms involved in the generation and recombination of excess carriers are discussed and the basic equations of device physics are given. Both the dark and illuminated properties of p-n junctions are analyzed. Energy conversion efficiency limits are discussed for the photovoltaic process as well as the effects of various nonidealities on efficiency. Techniques for measuring the efficiency of photovoltaic devices are also described. The standard technology for making silicon solar cells is reviewed, and improved silicon cell technology is discussed. Considerations relevant to the detailed design of silicon cells are discussed. Several alternative device concepts are outlined and the structure and properties of solar cells made on some of the more developed alternatives to single-crystal silicon are discussed. Concentrating systems and photovoltaic systems components and applications are described. The design of stand-alone, residential, and centralized photovoltaic power systems are discussed. 

Solar cells and their applications

Multiple solar cells in an integrated group, all oriented in one plane, constitute a solar photovoltaic panel or solar photovoltaic module. Photovoltaic modules often have a sheet of glass on the sun-facing side, allowing light to pass while protecting the semiconductor wafers. Solar cells are usually connected in series and parallel circuits or series in modules, creating an additive voltage. Connecting cells in parallel yields a higher current; however, problems such as shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and possible damage because of the reverse bias applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, though as of 2014)individual power boxes are often supplied for each module, and are connected in parallel. Although modules can be interconnected to create an array with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) is preferable. Otherwise, shunt diodes can reduce shadowing power loss in arrays with series/parallel connected cells.

 

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Q:What is the current situation and the recent progress space solar cells in China?
The space solar cells is uniquely designed for the power supply for the space, which is very expensive to build and maintain.
Q:My solar cells are broken, can I just buy one and replace it?
It's a bit risky to do that by yourself.
Q:Where and how can I find more information of Photovoltaic Cells Solar Panels? Can anybody share more about that?
Photovoltaic cells are considered to be one of the most reliable sun power generation materials and very easy to to maintain.
Q:Can anybody tell me the power supply of the home solar cell?
You should first look at your situation, and see how much equipment you are running. Then you can decide the power supply of the solar cells at home.
Q:How to get high voltage and high current output of solar cells?
Well, there is a scientific way which can help you to get the high current solar cells, but it can only be used in the experiment.
Q:How to make solar cells in a scientific way?
You can ask your teacher and let him show you how to do it.
Q:How about the current market price for the film solar?
The price of film solar varies based on the quality and quantity. The expensive one could be RMN 150 each, while the cheaper on could be only RMB 25 each.
Q:Anybody ever heard of solar roll flexible solar panel?
The flexible solar cells is more convenient to take with you, and also easy to charge as long as you do know how to use it properly.
Q:Is that true that the price of solar cells will be reduced in the coming year?
There are some policy change from the central government that financial subsidies of purchasing solar cells from the government will be lowered compared to last year. This could be a big reason for the price going down.
Q:What is the most commonly used material for solar cells?
It is mainly the crystalline silicon materials (including polysilicon and monocrystalline silicon), its market share in more than 90% and in the future for a long period of time will still be the main material of solar cells.
Our company is a High-tech enterprise, who is professional on manufacturing on solar photovoltaic products. We mainly produce the solar module and system. Our annual production capacity of solar module is 50MW.Meanwhile,we also undertake the design, installation and serviceonbothon-grid & off-grid system for home and power plant.

1. Manufacturer Overview

Location Zhejiang,China (Mainland)
Year Established 2006
Annual Output Value Above US$100 Million
Main Markets North America 2.90%
South America 25.60%
Eastern Europe 4.83%
Southeast Asia 9.18%
Africa 1.16%
Mid East 2.90%
Western Europe 19.81%
Central America 2.41%
Northern Europe 9.95%
Southern Europe 8.21%
South Asia 0.97%
Domestic Market 12.08%
Company Certifications ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Rotterdam,Hamburg
Export Percentage 81% - 90%
No.of Employees in Trade Department 6-10 People
Language Spoken: English, Chinese, Japanese, German, French
b)Factory Information  
Factory Size: 3,000-5,000 square meters
No. of Production Lines 5
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average